final SelectOperator selectionRegion = new SelectOperator(new ComparisonPredicate(
new ColumnReference(_sc, 1), new ValueSpecification(_sc, _region)));
final ProjectOperator projectionRegion = new ProjectOperator(new int[] { 0 });
final DataSourceComponent relationRegion = new DataSourceComponent("REGION", dataPath
+ "region" + extension, _queryPlan).setHashIndexes(hashRegion)
.addOperator(selectionRegion).addOperator(projectionRegion);
// -------------------------------------------------------------------------------------
final List<Integer> hashNation1 = Arrays.asList(1);
final ProjectOperator projectionNation1 = new ProjectOperator(new int[] { 0, 2 });
final DataSourceComponent relationNation1 = new DataSourceComponent("NATION1", dataPath
+ "nation" + extension, _queryPlan).setHashIndexes(hashNation1).addOperator(
projectionNation1);
// -------------------------------------------------------------------------------------
final EquiJoinComponent R_Njoin = new EquiJoinComponent(relationRegion, relationNation1,
_queryPlan).addOperator(new ProjectOperator(new int[] { 1 })).setHashIndexes(
Arrays.asList(0));
// -------------------------------------------------------------------------------------
final List<Integer> hashCustomer = Arrays.asList(0);
final ProjectOperator projectionCustomer = new ProjectOperator(new int[] { 3, 0 });
final DataSourceComponent relationCustomer = new DataSourceComponent("CUSTOMER", dataPath
+ "customer" + extension, _queryPlan).setHashIndexes(hashCustomer).addOperator(
projectionCustomer);
// -------------------------------------------------------------------------------------
final EquiJoinComponent R_N_Cjoin = new EquiJoinComponent(R_Njoin, relationCustomer,
_queryPlan).addOperator(new ProjectOperator(new int[] { 1 })).setHashIndexes(
Arrays.asList(0));
// -------------------------------------------------------------------------------------
final List<Integer> hashSupplier = Arrays.asList(1);
final ProjectOperator projectionSupplier = new ProjectOperator(new int[] { 0, 3 });
final DataSourceComponent relationSupplier = new DataSourceComponent("SUPPLIER", dataPath
+ "supplier" + extension, _queryPlan).setHashIndexes(hashSupplier).addOperator(
projectionSupplier);
// -------------------------------------------------------------------------------------
final List<Integer> hashNation2 = Arrays.asList(0);
final ProjectOperator projectionNation2 = new ProjectOperator(new int[] { 0, 1 });
final DataSourceComponent relationNation2 = new DataSourceComponent("NATION2", dataPath
+ "nation" + extension, _queryPlan).setHashIndexes(hashNation2).addOperator(
projectionNation2);
// -------------------------------------------------------------------------------------
final EquiJoinComponent S_Njoin = new EquiJoinComponent(relationSupplier, relationNation2,
_queryPlan).addOperator(new ProjectOperator(new int[] { 0, 2 })).setHashIndexes(
Arrays.asList(0));
// -------------------------------------------------------------------------------------
final List<Integer> hashPart = Arrays.asList(0);
final SelectOperator selectionPart = new SelectOperator(new ComparisonPredicate(
new ColumnReference(_sc, 4), new ValueSpecification(_sc, _type)));
final ProjectOperator projectionPart = new ProjectOperator(new int[] { 0 });
final DataSourceComponent relationPart = new DataSourceComponent("PART", dataPath + "part"
+ extension, _queryPlan).setHashIndexes(hashPart).addOperator(selectionPart)
.addOperator(projectionPart);
// -------------------------------------------------------------------------------------
final List<Integer> hashLineitem = Arrays.asList(1);
// first field in projection
final ColumnReference orderKey = new ColumnReference(_sc, 0);
// second field in projection
final ColumnReference partKey = new ColumnReference(_sc, 1);
// third field in projection
final ColumnReference suppKey = new ColumnReference(_sc, 2);
// forth field in projection
final ValueExpression<Double> substract = new Subtraction(new ValueSpecification(
_doubleConv, 1.0), new ColumnReference(_doubleConv, 6));
// extendedPrice*(1-discount)
final ValueExpression<Double> product = new Multiplication(new ColumnReference(_doubleConv,
5), substract);
final ProjectOperator projectionLineitem = new ProjectOperator(orderKey, partKey, suppKey,
product);
final DataSourceComponent relationLineitem = new DataSourceComponent("LINEITEM", dataPath
+ "lineitem" + extension, _queryPlan).setHashIndexes(hashLineitem).addOperator(
projectionLineitem);
// -------------------------------------------------------------------------------------
final EquiJoinComponent P_Ljoin = new EquiJoinComponent(relationPart, relationLineitem,
_queryPlan).addOperator(new ProjectOperator(new int[] { 1, 2, 3 })).setHashIndexes(
Arrays.asList(0));
// -------------------------------------------------------------------------------------
final List<Integer> hashOrders = Arrays.asList(0);
final SelectOperator selectionOrders = new SelectOperator(new BetweenPredicate(
new ColumnReference(_dateConv, 4), true, new ValueSpecification(_dateConv, _date1),
true, new ValueSpecification(_dateConv, _date2)));
// first field in projection
final ValueExpression OrdersOrderKey = new ColumnReference(_sc, 0);
// second field in projection
final ValueExpression OrdersCustKey = new ColumnReference(_sc, 1);
// third field in projection
final ValueExpression OrdersExtractYear = new IntegerYearFromDate(
new ColumnReference<Date>(_dateConv, 4));
final ProjectOperator projectionOrders = new ProjectOperator(OrdersOrderKey, OrdersCustKey,
OrdersExtractYear);
final DataSourceComponent relationOrders = new DataSourceComponent("ORDERS", dataPath
+ "orders" + extension, _queryPlan).setHashIndexes(hashOrders)
.addOperator(selectionOrders).addOperator(projectionOrders);
// -------------------------------------------------------------------------------------
final EquiJoinComponent P_L_Ojoin = new EquiJoinComponent(P_Ljoin, relationOrders,